ADM812: Microprocessors Supervisory Circuit in 4-Lead SOT-143, Logic High RESET Output

The ADM811/ADM812 are reliable voltage monitoring devices suitable for use in most voltage monitoring applications. The ADM811/ADM812 are designed to monitor six different voltages, each allowing a 5% or 10% degradation of standard PSU voltages before a reset occurs. These voltages have been selected for the effective monitoring of 2.5 V, 3 V, 3.3 V, and 5 V supply voltage levels.

Included in this circuit is a debounced manual reset input. Reset can be activated using an electrical switch (or an input from another digital device) or by a degradation of the supply voltage. The manual reset function is very useful, especially if the circuit in which the ADM811/ADM812 are operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system.

APPLICATIONS

• Microprocessor systems
• Controllers
• Intelligent instruments
• Automotive systems
• Safety systems
• Portable instruments

ADM812 特点

• Superior Upgrade for MAX811/MAX812
• Specified over Temperature
• Low Power Consumption (5 uA Typ)
• Precision Voltage Monitor: 2.5 V, 3 V, 3.3 V, 5 V Options
• Reset Assertion Down to 1 V CC
• Power-on reset: 140 ms minimum
• Logic low RESET output (ADM811)
• Logic high RESET output (ADM812)
• Built-in manual reset

ADM812 功能框图

ADM812 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
ADM812LART-REEL7	量产	4 ld SOT143	4	工业
ADM812LARTZ-REEL	量产	4 ld SOT143	4	工业
ADM812LARTZ-REEL7	量产	4 ld SOT143	4	工业
ADM812MART-REEL	量产	4 ld SOT143	4	工业
ADM812MART-REEL7	量产	4 ld SOT143	4	工业
ADM812MARTZ-REEL	量产	4 ld SOT143	4	工业
ADM812MARTZ-REEL7	量产	4 ld SOT143	4	工业
ADM812RART-REEL7	量产	4 ld SOT143	4	工业
ADM812RARTZ-REEL	量产	4 ld SOT143	4	工业
ADM812RARTZ-REEL7	量产	4 ld SOT143	4	工业
ADM812SART-REEL	量产	4 ld SOT143	4	工业
ADM812SART-REEL7	量产	4 ld SOT143	4	工业
ADM812SARTZ-REEL	量产	4 ld SOT143	4	工业
ADM812SARTZ-REEL7	量产	4 ld SOT143	4	工业
ADM812TART-REEL7	量产	4 ld SOT143	4	工业
ADM812TARTZ-REEL	量产	4 ld SOT143	4	工业
ADM812TARTZ-REEL7	量产	4 ld SOT143	4	工业
ADM812ZART-REEL	量产	4 ld SOT143	4	工业
ADM812ZART-REEL7	量产	4 ld SOT143	4	工业
ADM812ZARTZ-REEL	量产	4 ld SOT143	4	工业
ADM812ZARTZ-REEL7	量产	4 ld SOT143	4	工业

ADM812 应用技术支持与电子电路设计开发资源下载

1. ADM812 数据手册DataSheet 下载 . PDF
2. ADI 模拟器件公司比较器产品选型指南 . PDF
3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF
4. 电压监测及序列分析
5. 40年的模拟领导不为电源管理IC